﻿//
// Copyright 2023 Google LLC
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
//

using Google.Apis.Auth.OAuth2;
using Google.Apis.Auth.OAuth2.Flows;
using Google.Solutions.Apis.Client;
using System;

namespace Google.Solutions.Apis.Auth.Gaia
{
    /// <summary>
    /// Authorization code flow.
    /// </summary>
    internal class GaiaCodeFlow : GoogleAuthorizationCodeFlow
    {
        public GaiaCodeFlow(Initializer initializer)
            : base(initializer)
        {
        }

        //---------------------------------------------------------------------
        // Inner classes.
        //---------------------------------------------------------------------

        internal new class Initializer : GoogleAuthorizationCodeFlow.Initializer
        {
            protected Initializer(
                ServiceEndpointDirections directions,
                IDeviceEnrollment deviceEnrollment,
                UserAgent userAgent)
                : base(
                      GoogleAuthConsts.OidcAuthorizationUrl,
                      new Uri(directions.BaseUri, "/token").ToString(),
                      new Uri(directions.BaseUri, "/revoke").ToString())
            {
                this.HttpClientFactory = new PscAndMtlsAwareHttpClientFactory(
                    directions,
                    deviceEnrollment,
                    userAgent);

                ApiTraceSource.Log.TraceInformation(
                    "Using endpoint {0}",
                    directions);
            }

            public Initializer(
                ServiceEndpoint<GaiaOidcClient> endpoint,
                IDeviceEnrollment deviceEnrollment,
                UserAgent userAgent)
                : this(
                      endpoint.GetDirections(deviceEnrollment.State),
                      deviceEnrollment,
                      userAgent)
            {
            }
        }
    }
}
